/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 21:02:11,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 21:02:11,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 21:02:11,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 21:02:11,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 21:02:11,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 21:02:11,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 21:02:11,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 21:02:11,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 21:02:11,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 21:02:11,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 21:02:11,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 21:02:11,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 21:02:11,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 21:02:11,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 21:02:11,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 21:02:11,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 21:02:11,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 21:02:11,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 21:02:11,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 21:02:11,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 21:02:11,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 21:02:11,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 21:02:11,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 21:02:11,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 21:02:11,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 21:02:11,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 21:02:11,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 21:02:11,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 21:02:11,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 21:02:11,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 21:02:11,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 21:02:11,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 21:02:11,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 21:02:11,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 21:02:11,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 21:02:11,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 21:02:11,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 21:02:11,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 21:02:11,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 21:02:11,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 21:02:11,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 21:02:11,943 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 21:02:11,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 21:02:11,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 21:02:11,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 21:02:11,945 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 21:02:11,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 21:02:11,946 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 21:02:11,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 21:02:11,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 21:02:11,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 21:02:11,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 21:02:11,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 21:02:11,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 21:02:11,947 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 21:02:11,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 21:02:11,948 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 21:02:11,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 21:02:11,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 21:02:11,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 21:02:11,949 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 21:02:11,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 21:02:11,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:02:11,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 21:02:11,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 21:02:11,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 21:02:11,950 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 21:02:11,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 21:02:11,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 21:02:11,951 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 21:02:11,951 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 21:02:12,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 21:02:12,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 21:02:12,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 21:02:12,454 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 21:02:12,455 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 21:02:12,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label26.c [2020-10-26 21:02:12,543 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b208d4d4e/96e0e024ac2d4e29839cc5ed30443732/FLAGf5a9451d5 [2020-10-26 21:02:13,600 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 21:02:13,601 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label26.c [2020-10-26 21:02:13,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b208d4d4e/96e0e024ac2d4e29839cc5ed30443732/FLAGf5a9451d5 [2020-10-26 21:02:14,039 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b208d4d4e/96e0e024ac2d4e29839cc5ed30443732 [2020-10-26 21:02:14,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 21:02:14,052 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 21:02:14,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 21:02:14,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 21:02:14,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 21:02:14,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:02:14" (1/1) ... [2020-10-26 21:02:14,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@349fbdff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:14, skipping insertion in model container [2020-10-26 21:02:14,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:02:14" (1/1) ... [2020-10-26 21:02:14,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 21:02:14,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 21:02:15,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:02:16,007 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 21:02:16,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:02:16,859 INFO L208 MainTranslator]: Completed translation [2020-10-26 21:02:16,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:16 WrapperNode [2020-10-26 21:02:16,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 21:02:16,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 21:02:16,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 21:02:16,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 21:02:16,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:16" (1/1) ... [2020-10-26 21:02:16,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:16" (1/1) ... [2020-10-26 21:02:16,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:16" (1/1) ... [2020-10-26 21:02:16,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:16" (1/1) ... [2020-10-26 21:02:17,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:16" (1/1) ... [2020-10-26 21:02:17,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:16" (1/1) ... [2020-10-26 21:02:17,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:16" (1/1) ... [2020-10-26 21:02:17,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 21:02:17,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 21:02:17,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 21:02:17,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 21:02:17,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:02:17,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 21:02:17,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 21:02:17,307 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 21:02:17,308 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 21:02:17,308 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 21:02:17,308 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 21:02:17,308 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 21:02:17,309 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 21:02:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 21:02:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 21:02:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 21:02:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 21:02:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 21:02:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 21:02:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 21:02:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 21:02:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 21:02:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 21:02:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 21:02:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 21:02:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 21:02:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 21:02:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 21:02:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 21:02:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 21:02:22,288 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 21:02:22,288 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 21:02:22,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:02:22 BoogieIcfgContainer [2020-10-26 21:02:22,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 21:02:22,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 21:02:22,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 21:02:22,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 21:02:22,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:02:14" (1/3) ... [2020-10-26 21:02:22,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c56e125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:02:22, skipping insertion in model container [2020-10-26 21:02:22,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:16" (2/3) ... [2020-10-26 21:02:22,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c56e125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:02:22, skipping insertion in model container [2020-10-26 21:02:22,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:02:22" (3/3) ... [2020-10-26 21:02:22,301 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label26.c [2020-10-26 21:02:22,313 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 21:02:22,320 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 21:02:22,334 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 21:02:22,368 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 21:02:22,369 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 21:02:22,369 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 21:02:22,369 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 21:02:22,369 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 21:02:22,369 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 21:02:22,369 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 21:02:22,370 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 21:02:22,409 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-26 21:02:22,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2020-10-26 21:02:22,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:02:22,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:02:22,463 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:02:22,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:02:22,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1911693056, now seen corresponding path program 1 times [2020-10-26 21:02:22,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:02:22,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125743275] [2020-10-26 21:02:22,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:02:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:02:23,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:28,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:28,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:02:28,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 797 [2020-10-26 21:02:28,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:02:28,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5391 [2020-10-26 21:02:28,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:02:28,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-26 21:02:28,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:02:28,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-26 21:02:28,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 21:02:31,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:02:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:02:31,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:31,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:02:31,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:02:31,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:02:31,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 21:02:31,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:02:31,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:02:31,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:02:31,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:02:31,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:02:35,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:02:35,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125743275] [2020-10-26 21:02:35,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:02:35,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-26 21:02:35,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378528886] [2020-10-26 21:02:35,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-26 21:02:35,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:02:35,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-26 21:02:35,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-26 21:02:35,324 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 18 states. [2020-10-26 21:02:35,581 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-26 21:02:35,837 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-26 21:02:36,058 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-26 21:02:36,325 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-26 21:02:36,807 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-26 21:02:37,227 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-26 21:02:40,200 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-26 21:02:40,511 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-26 21:02:43,059 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-26 21:02:43,262 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-26 21:02:44,671 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-26 21:02:48,992 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-26 21:02:49,185 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-26 21:02:55,026 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-26 21:02:55,228 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-26 21:02:58,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:02:58,511 INFO L93 Difference]: Finished difference Result 2553 states and 4911 transitions. [2020-10-26 21:02:58,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 21:02:58,514 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 781 [2020-10-26 21:02:58,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:02:58,574 INFO L225 Difference]: With dead ends: 2553 [2020-10-26 21:02:58,574 INFO L226 Difference]: Without dead ends: 1581 [2020-10-26 21:02:58,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-26 21:02:58,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2020-10-26 21:02:58,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1581. [2020-10-26 21:02:58,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-10-26 21:02:58,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2340 transitions. [2020-10-26 21:02:58,768 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2340 transitions. Word has length 781 [2020-10-26 21:02:58,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:02:58,773 INFO L481 AbstractCegarLoop]: Abstraction has 1581 states and 2340 transitions. [2020-10-26 21:02:58,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-26 21:02:58,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2340 transitions. [2020-10-26 21:02:58,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2020-10-26 21:02:58,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:02:58,807 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:02:58,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 21:02:58,808 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:02:58,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:02:58,810 INFO L82 PathProgramCache]: Analyzing trace with hash -983319569, now seen corresponding path program 1 times [2020-10-26 21:02:58,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:02:58,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161567397] [2020-10-26 21:02:58,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:02:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:02:59,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:59,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:01,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:04,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:04,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 818 [2020-10-26 21:03:04,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:03:04,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-26 21:03:04,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:04,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 21:03:04,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:03:04,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 809 [2020-10-26 21:03:04,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:03:04,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:03:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:04,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:04,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:04,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:03:04,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:03:04,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 21:03:04,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:04,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:03:04,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:03:04,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:03:04,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:03:04,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:03:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:04,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:04,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:04,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:04,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:03:04,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:03:04,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 21:03:04,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:04,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:03:04,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:03:04,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:03:04,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:03:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 21:03:05,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161567397] [2020-10-26 21:03:05,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:03:05,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 21:03:05,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284670830] [2020-10-26 21:03:05,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 21:03:05,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:03:05,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 21:03:05,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 21:03:05,636 INFO L87 Difference]: Start difference. First operand 1581 states and 2340 transitions. Second operand 6 states. [2020-10-26 21:03:05,783 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:03:16,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:03:16,814 INFO L93 Difference]: Finished difference Result 3285 states and 5564 transitions. [2020-10-26 21:03:16,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 21:03:16,815 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 800 [2020-10-26 21:03:16,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:03:16,831 INFO L225 Difference]: With dead ends: 3285 [2020-10-26 21:03:16,831 INFO L226 Difference]: Without dead ends: 2437 [2020-10-26 21:03:16,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:03:16,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2020-10-26 21:03:16,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 2426. [2020-10-26 21:03:16,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2426 states. [2020-10-26 21:03:16,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 3490 transitions. [2020-10-26 21:03:16,915 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 3490 transitions. Word has length 800 [2020-10-26 21:03:16,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:03:16,917 INFO L481 AbstractCegarLoop]: Abstraction has 2426 states and 3490 transitions. [2020-10-26 21:03:16,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 21:03:16,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 3490 transitions. [2020-10-26 21:03:16,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2020-10-26 21:03:16,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:03:16,950 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:03:16,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 21:03:16,950 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:03:16,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:03:16,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1288952488, now seen corresponding path program 1 times [2020-10-26 21:03:16,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:03:16,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811100240] [2020-10-26 21:03:16,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:03:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:17,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:17,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:20,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:22,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:22,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 835 [2020-10-26 21:03:22,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:03:22,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-26 21:03:22,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:22,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:03:22,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:03:22,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-26 21:03:22,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:03:22,441 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:03:22,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:03:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:22,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:22,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:22,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:03:22,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:03:22,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 21:03:22,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:22,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:03:22,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:03:22,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:03:22,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:03:22,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:03:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:22,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:22,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:22,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:22,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:03:22,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:03:22,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 21:03:22,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:22,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:03:22,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:03:22,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:03:22,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:03:22,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:03:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:22,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:22,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:22,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 21:03:22,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:03:22,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 21:03:22,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:22,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:03:22,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:03:22,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 21:03:22,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-26 21:03:23,358 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 21:03:23,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811100240] [2020-10-26 21:03:23,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:03:23,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:03:23,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132226143] [2020-10-26 21:03:23,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:03:23,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:03:23,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:03:23,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:03:23,370 INFO L87 Difference]: Start difference. First operand 2426 states and 3490 transitions. Second operand 8 states. [2020-10-26 21:03:33,444 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:03:37,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:03:37,251 INFO L93 Difference]: Finished difference Result 5940 states and 9220 transitions. [2020-10-26 21:03:37,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:03:37,254 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 815 [2020-10-26 21:03:37,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:03:37,278 INFO L225 Difference]: With dead ends: 5940 [2020-10-26 21:03:37,278 INFO L226 Difference]: Without dead ends: 4247 [2020-10-26 21:03:37,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 21:03:37,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4247 states. [2020-10-26 21:03:37,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4247 to 4186. [2020-10-26 21:03:37,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4186 states. [2020-10-26 21:03:37,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4186 states to 4186 states and 6036 transitions. [2020-10-26 21:03:37,400 INFO L78 Accepts]: Start accepts. Automaton has 4186 states and 6036 transitions. Word has length 815 [2020-10-26 21:03:37,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:03:37,401 INFO L481 AbstractCegarLoop]: Abstraction has 4186 states and 6036 transitions. [2020-10-26 21:03:37,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:03:37,401 INFO L276 IsEmpty]: Start isEmpty. Operand 4186 states and 6036 transitions. [2020-10-26 21:03:37,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 843 [2020-10-26 21:03:37,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:03:37,419 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:03:37,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 21:03:37,419 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:03:37,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:03:37,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1496847493, now seen corresponding path program 1 times [2020-10-26 21:03:37,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:03:37,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093829070] [2020-10-26 21:03:37,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:03:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:37,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:37,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:37,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:39,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:42,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:42,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 864 [2020-10-26 21:03:42,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:03:42,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-26 21:03:42,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:42,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:03:42,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:03:42,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-26 21:03:42,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:03:42,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:03:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:42,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:42,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:42,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:03:42,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:03:42,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 21:03:42,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:42,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:03:42,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:03:42,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:03:42,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:03:42,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:03:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:42,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:42,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:42,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:42,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-26 21:03:42,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:03:42,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 21:03:42,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:42,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:03:42,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:03:42,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-26 21:03:42,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:03:42,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 21:03:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:42,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:42,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:42,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 21:03:42,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:03:42,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 21:03:42,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:42,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:03:42,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:03:42,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 21:03:42,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:03:43,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-26 21:03:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:43,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:43,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:43,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-26 21:03:43,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:03:43,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 21:03:43,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:43,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:03:43,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 21:03:43,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:03:43,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:03:43,664 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 57 proven. 35 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 21:03:43,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093829070] [2020-10-26 21:03:43,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:03:43,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 21:03:43,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136989327] [2020-10-26 21:03:43,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:03:43,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:03:43,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:03:43,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:03:43,667 INFO L87 Difference]: Start difference. First operand 4186 states and 6036 transitions. Second operand 8 states. [2020-10-26 21:03:52,719 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:03:59,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:03:59,535 INFO L93 Difference]: Finished difference Result 11631 states and 18501 transitions. [2020-10-26 21:03:59,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 21:03:59,537 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 842 [2020-10-26 21:03:59,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:03:59,593 INFO L225 Difference]: With dead ends: 11631 [2020-10-26 21:03:59,594 INFO L226 Difference]: Without dead ends: 8178 [2020-10-26 21:03:59,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-10-26 21:03:59,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8178 states. [2020-10-26 21:03:59,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8178 to 7873. [2020-10-26 21:03:59,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7873 states. [2020-10-26 21:03:59,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7873 states to 7873 states and 10822 transitions. [2020-10-26 21:03:59,956 INFO L78 Accepts]: Start accepts. Automaton has 7873 states and 10822 transitions. Word has length 842 [2020-10-26 21:03:59,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:03:59,956 INFO L481 AbstractCegarLoop]: Abstraction has 7873 states and 10822 transitions. [2020-10-26 21:03:59,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:03:59,957 INFO L276 IsEmpty]: Start isEmpty. Operand 7873 states and 10822 transitions. [2020-10-26 21:03:59,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2020-10-26 21:03:59,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:03:59,993 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:03:59,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:03:59,994 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:03:59,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:03:59,995 INFO L82 PathProgramCache]: Analyzing trace with hash -158007476, now seen corresponding path program 1 times [2020-10-26 21:03:59,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:03:59,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657264964] [2020-10-26 21:03:59,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:04:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:00,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:00,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:03,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:05,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:05,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 889 [2020-10-26 21:04:05,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:04:05,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-26 21:04:05,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:05,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:04:05,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:04:05,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 21:04:05,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:05,434 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:04:05,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:04:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:05,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:05,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:05,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:04:05,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:04:05,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:04:05,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:05,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:04:05,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:04:05,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:04:05,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:05,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:04:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:05,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:05,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:05,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:05,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-26 21:04:05,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:04:05,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 21:04:05,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:05,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:04:05,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:04:05,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-26 21:04:05,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:05,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 21:04:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:05,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:05,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:05,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-26 21:04:05,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:04:05,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 21:04:05,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:05,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:04:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:04:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-26 21:04:05,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:06,430 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 83 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 21:04:06,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657264964] [2020-10-26 21:04:06,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:04:06,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:04:06,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496938071] [2020-10-26 21:04:06,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:04:06,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:04:06,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:04:06,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:04:06,433 INFO L87 Difference]: Start difference. First operand 7873 states and 10822 transitions. Second operand 8 states. [2020-10-26 21:04:06,562 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:04:10,825 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-26 21:04:19,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:04:19,718 INFO L93 Difference]: Finished difference Result 22202 states and 31893 transitions. [2020-10-26 21:04:19,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 21:04:19,719 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 869 [2020-10-26 21:04:19,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:04:19,787 INFO L225 Difference]: With dead ends: 22202 [2020-10-26 21:04:19,787 INFO L226 Difference]: Without dead ends: 15062 [2020-10-26 21:04:19,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:04:19,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15062 states. [2020-10-26 21:04:20,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15062 to 15005. [2020-10-26 21:04:20,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15005 states. [2020-10-26 21:04:20,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15005 states to 15005 states and 19735 transitions. [2020-10-26 21:04:20,274 INFO L78 Accepts]: Start accepts. Automaton has 15005 states and 19735 transitions. Word has length 869 [2020-10-26 21:04:20,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:04:20,275 INFO L481 AbstractCegarLoop]: Abstraction has 15005 states and 19735 transitions. [2020-10-26 21:04:20,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:04:20,275 INFO L276 IsEmpty]: Start isEmpty. Operand 15005 states and 19735 transitions. [2020-10-26 21:04:20,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2020-10-26 21:04:20,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:04:20,328 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:04:20,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 21:04:20,328 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:04:20,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:04:20,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1629183380, now seen corresponding path program 1 times [2020-10-26 21:04:20,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:04:20,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368902461] [2020-10-26 21:04:20,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:04:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:20,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:21,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:22,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:25,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:25,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 945 [2020-10-26 21:04:25,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:04:25,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-26 21:04:25,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:25,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-26 21:04:25,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:04:25,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 936 [2020-10-26 21:04:25,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:26,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:04:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:26,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:26,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:26,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:04:26,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:04:26,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 21:04:26,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:26,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:04:26,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:04:26,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:04:26,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:26,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:04:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:26,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:26,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:26,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:26,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:04:26,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:04:26,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 21:04:26,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:26,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:04:26,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:04:26,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:04:26,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:26,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:04:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:26,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:26,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:26,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:26,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-26 21:04:26,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:04:26,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-26 21:04:26,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:26,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:04:26,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:04:26,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 21:04:26,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:27,532 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 14 proven. 132 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-26 21:04:27,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368902461] [2020-10-26 21:04:27,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:04:27,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 21:04:27,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357657510] [2020-10-26 21:04:27,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:04:27,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:04:27,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:04:27,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:04:27,535 INFO L87 Difference]: Start difference. First operand 15005 states and 19735 transitions. Second operand 7 states. [2020-10-26 21:04:27,661 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:04:40,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:04:40,384 INFO L93 Difference]: Finished difference Result 42197 states and 57598 transitions. [2020-10-26 21:04:40,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 21:04:40,385 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 925 [2020-10-26 21:04:40,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:04:40,504 INFO L225 Difference]: With dead ends: 42197 [2020-10-26 21:04:40,504 INFO L226 Difference]: Without dead ends: 27925 [2020-10-26 21:04:40,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-26 21:04:40,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27925 states. [2020-10-26 21:04:41,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27925 to 24402. [2020-10-26 21:04:41,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24402 states. [2020-10-26 21:04:41,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24402 states to 24402 states and 33234 transitions. [2020-10-26 21:04:41,523 INFO L78 Accepts]: Start accepts. Automaton has 24402 states and 33234 transitions. Word has length 925 [2020-10-26 21:04:41,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:04:41,525 INFO L481 AbstractCegarLoop]: Abstraction has 24402 states and 33234 transitions. [2020-10-26 21:04:41,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:04:41,525 INFO L276 IsEmpty]: Start isEmpty. Operand 24402 states and 33234 transitions. [2020-10-26 21:04:41,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2020-10-26 21:04:41,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:04:41,612 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:04:41,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 21:04:41,612 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:04:41,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:04:41,613 INFO L82 PathProgramCache]: Analyzing trace with hash -333399977, now seen corresponding path program 1 times [2020-10-26 21:04:41,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:04:41,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352606104] [2020-10-26 21:04:41,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:04:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:41,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:41,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:42,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:42,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:46,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:46,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1022 [2020-10-26 21:04:46,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:04:46,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-26 21:04:46,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:04:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:04:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-26 21:04:46,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:46,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:04:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:46,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:46,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:46,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:04:46,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:04:46,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 21:04:46,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:46,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:04:46,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:04:46,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:04:46,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:47,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:04:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:47,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:47,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:47,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:04:47,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:04:47,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 21:04:47,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:47,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:04:47,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:04:47,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:04:47,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:47,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:04:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:47,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:47,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:47,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 21:04:47,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:04:47,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 21:04:47,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:47,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:04:47,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:04:47,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 21:04:47,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:47,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-26 21:04:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:47,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:47,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:47,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 21:04:47,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:04:47,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 21:04:47,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:47,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:04:47,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-26 21:04:47,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:04:47,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:47,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-26 21:04:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:47,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:47,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:47,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 21:04:47,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:04:47,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 21:04:47,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:47,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:04:47,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 21:04:47,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:04:47,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:47,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-26 21:04:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:47,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:47,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:47,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-26 21:04:47,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:04:47,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:04:47,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:47,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:04:47,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 21:04:47,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:04:47,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:47,820 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 228 proven. 78 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-26 21:04:47,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352606104] [2020-10-26 21:04:47,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:04:47,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:04:47,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470138184] [2020-10-26 21:04:47,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:04:47,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:04:47,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:04:47,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:04:47,824 INFO L87 Difference]: Start difference. First operand 24402 states and 33234 transitions. Second operand 7 states. [2020-10-26 21:04:47,965 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:04:54,853 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:05:02,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:05:02,199 INFO L93 Difference]: Finished difference Result 61766 states and 86266 transitions. [2020-10-26 21:05:02,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:05:02,200 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 996 [2020-10-26 21:05:02,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:05:02,456 INFO L225 Difference]: With dead ends: 61766 [2020-10-26 21:05:02,456 INFO L226 Difference]: Without dead ends: 38097 [2020-10-26 21:05:02,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:05:02,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38097 states. [2020-10-26 21:05:03,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38097 to 37145. [2020-10-26 21:05:03,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37145 states. [2020-10-26 21:05:03,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37145 states to 37145 states and 46726 transitions. [2020-10-26 21:05:03,334 INFO L78 Accepts]: Start accepts. Automaton has 37145 states and 46726 transitions. Word has length 996 [2020-10-26 21:05:03,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:05:03,334 INFO L481 AbstractCegarLoop]: Abstraction has 37145 states and 46726 transitions. [2020-10-26 21:05:03,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:05:03,334 INFO L276 IsEmpty]: Start isEmpty. Operand 37145 states and 46726 transitions. [2020-10-26 21:05:03,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1109 [2020-10-26 21:05:03,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:05:03,399 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:05:03,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 21:05:03,399 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:05:03,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:05:03,400 INFO L82 PathProgramCache]: Analyzing trace with hash -877675185, now seen corresponding path program 1 times [2020-10-26 21:05:03,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:05:03,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136205047] [2020-10-26 21:05:03,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:05:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:03,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:03,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:03,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:03,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:07,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:08,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:08,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1134 [2020-10-26 21:05:08,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 21:05:08,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-26 21:05:08,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:05:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:05:08,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 21:05:08,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:08,795 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:05:08,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:05:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:08,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:08,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:08,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:05:08,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:08,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 21:05:08,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:05:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:05:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:05:08,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:08,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:05:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:08,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:08,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:08,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:05:08,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:08,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 21:05:08,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:08,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:05:08,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:05:08,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:05:08,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:08,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:05:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:08,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:08,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:08,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 21:05:08,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:08,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-26 21:05:08,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:08,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:05:08,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:05:08,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 21:05:08,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:09,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 21:05:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:09,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:09,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:09,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-26 21:05:09,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:09,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 21:05:09,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:09,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:05:09,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:05:09,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:05:09,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:09,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-26 21:05:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:09,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:09,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:09,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-26 21:05:09,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:09,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-26 21:05:09,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:05:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-26 21:05:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:05:09,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:09,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-10-26 21:05:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:09,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:09,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:09,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 21:05:09,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:09,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:05:09,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:09,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:05:09,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-26 21:05:09,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:05:09,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:09,794 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 340 proven. 125 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-26 21:05:09,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136205047] [2020-10-26 21:05:09,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:05:09,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:05:09,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686240555] [2020-10-26 21:05:09,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:05:09,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:05:09,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:05:09,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:05:09,797 INFO L87 Difference]: Start difference. First operand 37145 states and 46726 transitions. Second operand 7 states. [2020-10-26 21:05:10,048 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:05:12,091 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:05:32,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:05:32,647 INFO L93 Difference]: Finished difference Result 123990 states and 161891 transitions. [2020-10-26 21:05:32,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:05:32,647 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1108 [2020-10-26 21:05:32,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:05:33,066 INFO L225 Difference]: With dead ends: 123990 [2020-10-26 21:05:33,066 INFO L226 Difference]: Without dead ends: 87578 [2020-10-26 21:05:33,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:05:33,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87578 states. [2020-10-26 21:05:34,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87578 to 86708. [2020-10-26 21:05:34,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86708 states. [2020-10-26 21:05:35,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86708 states to 86708 states and 109395 transitions. [2020-10-26 21:05:35,559 INFO L78 Accepts]: Start accepts. Automaton has 86708 states and 109395 transitions. Word has length 1108 [2020-10-26 21:05:35,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:05:35,559 INFO L481 AbstractCegarLoop]: Abstraction has 86708 states and 109395 transitions. [2020-10-26 21:05:35,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:05:35,559 INFO L276 IsEmpty]: Start isEmpty. Operand 86708 states and 109395 transitions. [2020-10-26 21:05:36,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1161 [2020-10-26 21:05:36,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:05:36,075 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:05:36,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 21:05:36,076 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:05:36,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:05:36,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1017363879, now seen corresponding path program 1 times [2020-10-26 21:05:36,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:05:36,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863870438] [2020-10-26 21:05:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:05:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:36,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:36,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:36,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:37,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:41,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:41,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1186 [2020-10-26 21:05:41,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:05:41,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-26 21:05:41,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:41,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:05:41,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-26 21:05:41,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-26 21:05:41,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:41,756 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:05:41,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:05:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:41,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:41,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:41,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:05:41,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:41,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 21:05:41,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:41,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:05:41,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:05:41,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:05:41,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:41,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:05:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:41,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:41,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:41,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:05:41,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:41,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 21:05:41,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:41,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:05:41,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:05:41,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:05:41,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:41,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:05:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:41,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:41,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:41,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-26 21:05:41,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:41,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 21:05:41,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:41,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:05:41,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:05:41,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-26 21:05:41,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:41,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-26 21:05:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:41,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:41,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:41,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-26 21:05:41,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:41,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 21:05:41,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:41,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:05:41,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:05:41,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-26 21:05:41,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:42,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-26 21:05:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:42,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:42,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:42,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-26 21:05:42,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:42,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 21:05:42,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:42,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:05:42,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-26 21:05:42,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:05:42,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:42,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-10-26 21:05:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:42,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:42,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:42,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 21:05:42,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:42,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:05:42,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:42,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:05:42,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-26 21:05:42,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:05:42,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:42,788 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 429 proven. 55 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2020-10-26 21:05:42,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863870438] [2020-10-26 21:05:42,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:05:42,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:05:42,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114425144] [2020-10-26 21:05:42,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:05:42,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:05:42,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:05:42,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:05:42,791 INFO L87 Difference]: Start difference. First operand 86708 states and 109395 transitions. Second operand 7 states. [2020-10-26 21:05:43,101 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 93